wchar h status - chasonr/djgpp-lib GitHub Wiki

wchar.h provides all symbols required by C11/C17.

wcscoll() and wcsxfrm() do not respect the character set configured by setlocale().

SuSv4 specifies that FILE and va_list are defined as complete types. C11/C17 does not specify that wchar.h should define these types, even though it specifies functions whose prototypes use them. wchar.h currently defines only aliases for these types.

SuSv4 specifies these symbols as obsolescent features provided in wchar.h. djgpp-lib provides them in wctype.h, as C11/C17 specifies:

wctype_t
iswalnum
iswalpha
iswcntrl
iswctype
iswdigit
iswgraph
iswlower
iswprint
iswpunct
iswspace
iswupper
iswxdigit
towlower
towupper

wchar.h does not provide the following symbols required by SuSv4:

locale_t
mbsnrtowcs
open_wmemstream
wcpcpy
wcpncpy
wcscasecmp
wcscasecmp_l
wcscoll_l
wcsdup
wcsncasecmp
wcsncasecmp_l
wcsnlen
wcsnrtombs
wcswidth
wcsxfrm_l
wctype
wcwidth